Postgres.app Could not start on port 5432

Question

I\'m using http://postgresapp.com. In the menubar it gives the error \" Could not start on port 5432.\" Similarly if I try to start the server from the terminal, I get:

Answer 1

When trying to open the Postgres app was getting that same error regarding post 5432 (on Mac OSX 10.10.5)

I did:

$ lsof -i | grep LISTEN

Saw which PID was running postgres at that port, did: $ killall {pid} and then $ brew uninstall postgres

After that, restarted my Mac, and ran:

$ lsof -i | grep LISTEN again just to make sure. Saw no postgres running anywhere and was able to open the Postgres app without getting that warning.

Then I reinstalled postgres with $ brew install postgres

ANOTHER OPTION:

(I also tried this one time when the above approach didn't work and I could not kill any of the PID)

$ ps auxw | grep post

Saw a slew postgres processes, which I then sudo kill

Everything working fine now.